Guardian C Library Calls Reference Manual

Reference to Library Calls

Guardian TNS C Library Calls Reference Manual—128833 3-53

fprintf

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Conversion Modifiers

Here are the possible values of modifier in a conversion specifier:

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Conversion Codes

As mentioned earlier, conv_code determines both how fprintf interprets the

argument value and how it formats the value. This list shows the conversion codes

and describes the argument type and formatting specified by each code.

For conversion codes d, i, o, u, x, and X, the h modifier indicates that the value

is a short int, not an int. For conversion code n, the h modifier indicates that

the value is a pointer to short int, not a pointer to int.

For conversion codes d, i, o, u, x, and X, the l modifier indicates that the value

is a long int, not an int. For conversion code n, the l modifier indicates that the

value is a pointer to long int, not a pointer to int.

For conversion codes e, E, f, g, and G, the L modifier indicates that the value

is a long double, not a double. For conversion codes d, i, o, x, and X, the L

modifier indicates that the value is a long long, not an int.

formats an int argument as a single character, first converting the argument to

type unsigned int.

formats an int argument as a signed decimal integer

formats a double argument as a exponential number of the form [-]d.ddde±dd,

with one digit preceding the decimal point and precision digits following it. If

precision is zero, no decimal point is printed. If the conversion specifier

doesn’t include precision, six digits follow the decimal point. The value is

rounded to the specified number of decimal digits, and the exponent always

has at least two digits.

is equivalent to the e code, except that it prefixes the exponent with an

uppercase E rather than a lowercase one.

formats a double argument as a fixed-decimal number of the form [-]ddd.ddd,

with at least one digit preceding the decimal point and precision digits

following it. If precision is zero, no decimal point is printed. If the conversion

specifier doesn’t include precision, six digits follow the decimal point. The

value is rounded to the specified number of decimal digits.

formats a double argument using either the e code or the f code, depending

upon the value of the argument. The e code is used only if the exponent of the

converted value is less than or equal to -4, or if it is greater than or equal to the

precision. Trailing zeros are removed from the result, and a decimal point

appears only if it is followed by a digit.

is equivalent to the g code, except that it selects between the E code (not the e

code) and the f code.

is equivalent to d.